Built-Up Roofing (BUR) membranes have been in use in North America for more than 100 years. BUR systems predominately consist of alternating layers of asphalt (bitumen) and fiberglass ply felts that create a very durable water-resistant membrane. The number of plies within a cross-section of the system
Read more →Introduction The application of any type of bituminous roofing system in cold weather poses special challenges. Specific to built-up roofing systems, these challenges can include maintaining the proper asphalt temperature at the point of application, slower cure time of cold-applied adhesives, and increased stiffness of roofing materials.
Read more →While volatile organic compound (VOC) regulations have tightened over the years, there continue to be compliant adhesive, cement, primer, and coating options available for the installation and maintenance of asphalt roofing systems. Asphalt roofing systems—installed and maintained with VOC-compliant adhesives, cements, primers, and coatings—continue to provide long-term
Read more →While properly designed roof systems installed over lightweight structural concrete roof decks have performed successfully, moisture-related complications can be an issue when these roof decks are used as a roof substrate. Higher absorptive properties of aggregates typically used in lightweight structural concrete can result in an elevated
Read more →Introduction The Asphalt Roofing Manufacturers Association (ARMA) recommends that the structural roof deck meet certain minimum requirements to be an acceptable substrate for the specified roofing system. Generally, all decks should be clean, dry, and securely fastened to the building structure with no abrupt level changes exceeding
Read more →Ponding water is defined as water, which remains on a roof 48 hours or longer. It may result from rain, melting snow/ice or runoff from rooftop equipment. The Asphalt Roofing Manufacturers Association is joined by many reputable organizations, such as the National Roofing Contractors Association, the Midwest
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